Crystallographic texture and velocities of ultrasonic waves in a Ni-based superalloy manufactured by laser powder bed fusion - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Materials Characterization Année : 2020

Crystallographic texture and velocities of ultrasonic waves in a Ni-based superalloy manufactured by laser powder bed fusion

Résumé

This study investigated the mechanisms of formation of the microstructure and texture of an Inconel 625 manufactured by additive manufacturing, using laser-based powder bed fusion. The resulting texture has a quadratic symmetry and a composite organization of grains. Some elongated grains have their 〈100〉 aligned along the build-up direction and grow from the middle of the melt pool, whereas the others are inclined with a lower texture. This is explained on the basis of usual solidification mechanisms. The overall texture is not very pronounced (texture index of 1.24) but sufficient to influence ultrasound wave propagation in a measurable manner. The difference is the most pronounced between the slow and fast quasi transverse waves. The contribution of two main factors influencing the anisotropy, namely the anisotropy of the single crystal and the shape of the grains, are discussed in the paper.
Fichier principal
Vignette du fichier
S1044580320320787.pdf (3 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03118300 , version 1 (22-09-2022)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Amal Khabouchi, Pascal Ventura, Nicolas Leymarie, Alain Hazotte, Lionel Germain. Crystallographic texture and velocities of ultrasonic waves in a Ni-based superalloy manufactured by laser powder bed fusion. Materials Characterization, 2020, 169, pp.110607. ⟨10.1016/j.matchar.2020.110607⟩. ⟨hal-03118300⟩
101 Consultations
35 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More